hello, you need to consult a dentist and get an x-ray done. swollen lower jaw may be due to infection to the roots of your teeth. if there is an infection get it treated. if there is no infection to the teeth, then you need to consult an ENT specialist.

Hi, Please consult your dentist as there may be severe tooth infection which can be ruled out with xray & by taking antibiotics to reduce swelling .Headache & uneasiness may be due to swelling.

Dead tooth can cause infection. Left untreated can cause swelling too. So visit dentist at the earliest to avoid pain and discomfort.

hello sir, Please bring her to the dentist as soon as you can.. it might be due to some infection on her teeth.. Dr.Bala Vignesh Chennai

Hello, you need to take her to an oral medicine specialist for complete evaluation. Regards Dr Suman

Your description of symptoms is not specific enough to give you suggestions on what the possible problem could be sir. More information regarding the duration of the swelling,  precesence of any associated symptoms like pain or pus discharge and so is required to identify the underlying problem sir. Kindly visit a dentist near you and get it examined sir.